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Single Arm Tricep Extension

Keep the upper arm beside the head and lower behind it rather than out to the side, then lock out without swinging. Working one arm at a time stops the stronger side carrying the weaker one, which is exactly what a two-handed version hides.

StrengthOtherControlledAll triceps exercises

What it works

Triceps

How to do it

  1. 1Hold one dumbbell overhead with the upper arm vertical and beside your head.
  2. 2Lower the weight behind your head, not out to the side, keeping the upper arm still — only the elbow moves.
  3. 3Extend back to lockout without swinging or letting the shoulder drift forward.
  4. 4Working one arm at a time is deliberate: with two hands the stronger side quietly takes more of the load and you never find out, which is exactly how an imbalance survives months of training.

Cues that matter

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